Parallel Encryption of Noisy Images Based on Sequence Generator and Chaotic Measurement Matrix

Table 3

Structural similarity between original image and reconstructed image.

SSIM	Compression ratio
	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1
Reconstructed image	0.4528	0.6356	0.7761	0.8592	0.9059	0.9453	0.9607	0.9813
Cipher image	0.0025	0.0034	0.0043	0.0055	0.0066	0.0070	0.0079	0.0092